Amanani akwiphepha lakho leglasi ahambelana nomlo wamehlo akho kunye namandla akho ombono wakho. Banokukunceda ubone ukuba unayo uxinzelelo, I-fairs okanye i-astigmatism-kwaye ingakanani i-degree.
Ukuba uyazi ukuba ungakhangela ntoni, unokwenza imvakalelo ngamanani namaqhinga kwitshathi yakho yokuphuma.
I-OD VS. OS: enye yeliso ngalinye
Oogqirha bamehlo basebenzisa izifinyezo "od" kunye "os" ukubonisa ilungelo lakho lasekunene nangaphandle.
● I-OD yeliso lakho lasekunene. I-OD imfutshane kwi-oculus dexter, ibinzana lesiLatini "liso lasekunene."
● Iliso lakho lasekhohlo. I-OS imfutshane kwi-oculus ofister, i-latin "yeliso lasekhohlo."
Ummiselo wakho unokufumana inyani ebhalwe "OU." Esi sisifinyezo seI-Oculus Uterque, oko kuthetha ukuba "amehlo amabini" kwisiLatini. La magama aqingqiweyo aqhelekileyo kwimigqaliselo yeeglasi, Iilensi zoqhakamshelwano kunye namayeza esweni, kodwa abanye oogqirha kunye neeklinikhi bakonyule ukwenza imiyalelo yamehlo yamehlo esebenzisa(Iliso lasekunene)kwayeIliso lasekhohlo)endaweni ye-OD kunye os.
I-SPRER (SPH)
I-SPIR ibonisa inani lamagunya eelensi emiselwe ukulungisa ukungabinamsebenzi okanye usosisa. I-lens yamandla ilinganiswa kwi-diokters (d).
● Ukuba inani eliphantsi kwesi sihloko liza nomqondiso (-),unomdla.
● Ukuba inani eliphantsi kwesi sihloko linomqondiso wokudibanisa (+),unomdla.
Isilinda (i-cyl)
Isilinda sibonisa inani le-lens yamandla afunekayoi-atistmatism. Ihlala ilandela amandla aphezulu kumyalelo weglasi.
Inombolo kwikholamu ye-cylinder inokuba nesayizi-thabatha (ukulungiswa kwe-astigmatism) okanye uphawu lwe-alitticmatism).
Ukuba akukho nto ivelayo kule kholamu, awunayo i-astigmatism, okanye inqanaba lakho le-astigmatism lincinci kangangokuba alifuni kulungiswa.
I-Axis
I-Axis ichaza i-meridian ye-lensi enamandla e-cylinder ukuyaichanekile i-atigmatism.
Ukuba ugunyazo lweglasi lubandakanya amandla e-cylinder, ikwadinga ukubandakanya ixabiso le-Axis, elilandela amandla esilinda.
I-Axis ichazwa ngenani ukusuka kwi-1 ukuya kwi-180.
● Inani lama-90 lihambelana ne-meridical ye-verid yeliso.
● Inani le-180 lihambelana ne-meridiya ethe tyaba.
Yongeza
"Yongeza" yiyongezwa amandla okwenza amandlaIsetyenziswe kwinxalenye esezantsi ye-lenses ye-multifocal ye-pressopia - uxinzelelo lwendalo lwenzeka ngobudala.
Inani elivelayo kweli candelo lommiselo lihlala lingu-"dibanisa" amandla, nokuba awuboni uphawu lukona. Ngokubanzi, iya kusuka kwi-+0.75 ukuya +3.00 d kwaye iya kuba ngamandla afanayo kwamehlo omabini.
Prism
Eli lixabiso lamandla e-pismatic, olinganiswe kwi-prism diopters ("PD" okanye unxantathu xa ubhala i-freethand), emiselwe ukubuyekezwaulungelelwaniso ngamehloiingxaki.
Ipesenti encinci yemiyalelo yeglasi ibandakanya inyathelo le-prism.
Xa sikhona, isixa se-prism siboniswe kwi-Metric okanye i-Englic Sublic Act (i-0.5 okanye ½, umzekelo), kwaye indlela ye-prism iboniswa ngokuphawula i-Pristive ye "Isiseko"
Izifinyezo ezine zisetyenziselwa isikhokelo sePrism: Bu = Isiseko; Bd = isiseko phantsi; Bi = isiseko kwi (kwimpumlo yomthengisi); Bo = isiseko (ukuya kwindlebe yomthengisi).
Ukuba unemidla engaphezulu okanye ufuna ulwazi olunobuchule kwiilensi zezinto eziphelileyo, nceda ungene kwiphepha lethuhttps: //www.W3ukufumana uncedo ngakumbi.